Glenda is a woman that Shawn meets at a Shenanigans speed-dating event while investigating a string of robberies. She tells him that she grew up on a farm and had a pet goat named Cassie, and casually but unsuccessfully asks Shawn his mother's maiden name, the names of any childhood pets he had, and his favorite color.
When Shawn and the gang go back a second time for further investigation, Shawn notices that she's asking these questions to her current date as well. He also spots a tan line on her ring finger. When Shawn spots the same tan line on the ring finger of Marvin, one of Shenanigans' employees, he knows the two are married and outs them to the entire crowd. He explains that Glenda would always ask bank security questions to her speed dates while making it look like regular small talk, and after getting this information she and Marvin would follow the target and rob them of their credit cards. This was made easier by the intoxicating GHB-laced popcorn that Marvin provided the speed daters, but it also killed one of their victims when the drug interfered with a pre-existing heart condition. The crowd are outraged and the two crooks are arrested.